Prestashop 1.7.3.0 language problem

[gambrinus777]

Hi all,

I've installed ps 1.7.3.0 and I'm trying to change the language in Italian.

I go to International-> translations and download the italian language with button add/update language: the language is in my repository app/Resources and Permissions are 775.

After that I go to International-> localization and change language in Configuration and save.

Finally I go to my account-> preferences and choose italian language and save.

Language is always english.

I've tried with an another language (spanish)... the site remain always in english...

Anyone has solved the problem?

Thanks